Category: Other, Technology, Science & Nature

Impedance comes under Electrical engineering terminologies and is universally denoted as ‘Z’. The opposition, a circuit that provides for the passage of alternating current (AC), is generally known as Impedance. The impedance is the combination of resistance (R), capacitance (C) & inductance (L) and the unit of measurement is in ohms (Ω). In high-speed digital or RF signal PCBs, the impedance is also frequency-dependent. Common impedance values in PCBs are 50 Ω, 75 Ω, 90 Ω & 100 Ω. website - https://www.viasionpcb.com/blog/what-is-impedance-controlled-pcbs/